Load lifting and transporting device



H. A. HUNTOON LOAD LIFTING AND TRANSPORTING DEVICE Aprir24fl 923.

2 Sheets-Sheet 1 Filed June 21. 1926 'Invcn'Z'or.

icon.

o w l April 24, 1928.

- H. A. HUNTOON LOAD LIFTING AND TRANSPQRTING DEVICE 2 Sheets-Sheet 2 Ira/6712 07" MwM Filed. June 21. 1926 Patented Apr. 24, 1928.

HARRY A. HUNtEOQl l-OE Gannon, t nilimois, ssienon 110 xnprnnnsmlongn im- 7 VESTERCQMPANY, Af CORPORATION 01: NEWPJ RSEY. t n

mm LI FTING e imimsr'o'n'rmw nnvidnl devices adaptedto housed in factories and other buildings tor tra nsliortingloads from one position to another;

The" embodiment ot the '111V'C11t'1011' herein shown isa handlifttrn ck'hnving zrplatforin Whieh is adapted to moved" underneathskid or other similar support for boxes eontain'in'g suppliesof parts Associated with} the platform-is a Wheel"-supligorted handle01 elevntingthe load from the floor! so thatiti may be transported?v Means for'l'oekin's; the platform in elevated. position is' :tl's'o provided:

An object of the invention is to provide-a" practical load lifting and trn nsp'or-ting device which will enahle' an" ope-ratowto quickly lift loads into transportable-positionand to" rapidly move thenrfi'oinonepoint to an other. t

Another objectof theinvent-ion is to provide a hand'1ift= trnck whichhas a; novel mode-of operation andlnaynheeconomically manufactured so asto add a in-ininnnn amountto thecost'of prodnction in a teetory. l 7 5 Other objects will appearvas the descrip= tion of theillustrative embodiment proceeds 1n the accompanying drawingsthereis illustrated a hand lifttruck oonstrnoted in accordance with the teachings of this inven tion. i

In the drawings Figure-l is an elevatio11- ot tl1e hand lift truck showingthe platform looked in elevated position; i

Flgure 2 IS a 'plain' view o't the11liistrat1ve truck; I Y 7 i I I n t r 1* more 0 IS' )artl :WSGCtlOllfllmenu and partly an elevation of the truck;

Figure 4 is an elevation showingthe plat 1'01111 of the; truck 111 lowered or load reee 1ving position; the members of the toggle look being shown in the position to-whioh they: are" moved when the 1 hhndle of the truck" el eva'tedi;

Figure 5 is pmztly a sectional view and' pa'rtlynn elevation taken on the seetioir 1ine 5-5 of F ignrez-l, looking in the direetion of the arrows; and

' Whole by the refrenee' nunieral 3.

detail-" view showing the structure 019' the lifting level; y which the il lnstiatii 'e truck-isoperatedk i j The ?hand lift truck shown" in" the drew a Wheel carrying lever 2 ,;tlie1htte dieing, niomihle fi'ol l'f the position 811mmmFi m-Q Y {l t-o I that shown in} Figure order to "ele vzite the load supportsor' plati'orin so that its load 1ntty=be;readi1y transported. The load support 1 or platform is locked in elevated? position by a toggle device indieated as a con struoting the% load I so ppm-t or lural-m1 of the "plit'ior-m underHeath the load. As is Well shoW-n in Fignre 2 of the drawings the platform has the rounded-corners 5 which act to guide the trueknndernestli its load;-v The forward end of the 2 platform also sets bumper to-protect other parts of the illustrative-tr-nCkfrOniinjury. l l he rails 6-o the *platfbrin 1 are con neeted' attheir rearw ardends by n, transverse spacer 7 Another spacer 8 braces theriiils of the platform ii'iterniediate their ends. Theiorw z1rd*porti on of the ill'ifstrhti te phi't form is strengthened and braced by a m-ans verse strut 9=he1'ein -sho wn= as u pivot-block interposed between the'rails of the platfornr and rigidly secured thereto. This PlVOh block 9 fOl'lllE. a depending bracket support ing a transverseshaft' or trnnnion lo"which preferably Inojeets beyond the sides of the pivot hlook. This lever extends rearwznrdly from the trunnion '10 and is show-n formed o'i tw'o spacecheha-nnel irons 12 bolted at their forward ends to wheel blocks Bijou? nailed at their forward ends upon thetmun' in on 10; These wheel blocks Y are supported hy" an axle 114 preferably looked in position" in-the bloeksbyunmms of set screw-s. 'Sup 1 i o'r-ting'-' wheel's 15' are rotat'ively mounted upon the en'ds'of th le. The lifting-lever smctmeis'prefera Y extended nn'dernjeatlr and considrabl y by'o'nd the end of -the pl it form so as to enable the platform and its load to be easily lifted by pivotal movement of the lever downwardly from the position shown in Figure 4: to that shown in F igure 1.

The rearward and upwardly extending parallel bars of the lifting lever are braced and held rigidly in parallel relation by braces 16 herein shown as straps riveted to the channel bars and secured at their midportions so as to form substantially intersecting braces. The extreme ends of the channel bars are bent inwardly at right angles, as shown at 17. Theseright-angular portions are held in alignment by means of a suitably shaped handle 18 which is bolted within the channel of the bars, as shown.

After the platform has been moved underneath a load andhas been elevated so as to move the load to transportable position, the platform has been lifted by the lever 2 to the position shown in Figure 1, and it is necessary to provide means for locking .the platform in elevated position relative to the lever. As shown, this locking means consists of a toggle mechanism including a trip 19 and a lock bar 20, the latter being shown as U-shaped. The lock bar is pivoted upon the spacer 7 preferably connecting the upper ends of the load stops 4 of the platform. The trip is pivotally connected at its upper end (see Figure l) to the lock bar by means of a pin 22, and is pivoted at its. lower end upon a rod secured transversely between the channel bars of the lifting lever. The lower end of the trip is extended at an angle so as to form a pedal'23 placed within easy reach of the operator of the truck. The upper end of the trip 19 is extended beyond the pin 22 and is formed with a transverse lug 2st engaging one side of the lock bar 20 so as to maintain the parts in the positions in which they are shown in Figure 1.

In operation the illustrative truck is transported with the platform lowered, as shown in Figure at. The platform is moved beneath a load and then the lever 2 is pressed downwardly. This actioncauses the forward end of the platform to engage the load, and furthcr downward movement of the lever moves the toggle mechanism to partly extended condition, so that its parts approach the positions in which they are shown in Figure 1. As the load is further lifted, the operator presses with his foot upon the rib 25 of the trip 19, forcing the trip and the lock bar into their locking relationship, and thereby holding the platform and its load in elevated po sition. The load is then free to be transported by the truck to any desired position. hen the operator desires to lower the load so that the truck may be withdrawn, he presses upon the pedal 23 and thus breaksthe toggle loci: so as to allow the rear end of derneath theload, which is preferably held in elevated position by supports on either side of thetruck.

To facilitate the'movement of the truck under heavy loads, the axle 14 is mounted within the wheels 15 by means of roller bearings 26 having spacers 27 particularly shown in the cut out portion of Figure 5. The wheels 15 are rotatively confined to the ends of the shaft by means of washers 28 preferably seated within shouldered portions of the wheel hubs 29. These washers may be provided with small openings through which locking pins 30 are passed. These locking pins also pass through holes formed in a lock washer 31 held in position by means of a cap screw 32 passing through both washers and screw-threaded into a bore within the axle.

The illustrative truck forms an article of factory equipment which is effective in its operation and is capable of rapid handling. It also may be economically manufactured, to the end that it forms a valuable adjunct to factory equipment without materially increasing costs of production.

lVhile there has been shown and claimed one particular embodiment of the invention, it is to be understood that the invention is not limited thereto, but that changes in the structure, coming within the scope of the a p pended claims, are covered thereby.

Having described my invention, I claim: 1. In a hand lift truck, a vertically movable horizontal platform adapted to support a load, a lever, supports connecting the lever and the platform at separated points, both of said supports acting as compression members to support the platform with a load thereon when the platform is in load transporting position, and one of said supports acting as a lock constantly pivotally connecting said platform and said lever but releasable to allow the platform and its lead to move downwardly. I

2. A hand lift truck comprising, in combination, a horizontally positioned load supporting platform, a load lifting and trans porting lever extending from a position above and rearwardly of said platform to a position underneath the platform near its forward end, means for pivotally connecting the forward end of the lifting lever and the platform, supporting wheels mounted upon an axle extending through and carried by the Jim lever at a position rearwardly of said means, toggle mechanism constantly connecting the rearward end of the platform and the lever in such a manner as to be extended'toward locking position when the lever is moved downwardly to elevate the platform and its load to load transporting position, and foot opera-ted means carried by said mecl'fanism for releasing the lock when it is desired to lower the platform and move the truck from underneath its load. I i

3. A hand lift truck comprising, in C0111. bination,a platform presenting a'horizontal load receiving surface, a platform lifting lever extending underneath theplatform from i a position near the forward end of the plat-- form and then upwardly to a position above and at the rear of the platform, means for pivotally connecting the forward end of the lever and the platform at a position underneath the forward end of the platform, supporting wheels carried by the leverrearwardly of said means, togglelocking and load supporting mechanism constantly connecting the rearward end of said platform and the lever and extensible toward locking position as the rearward end of the lever is moved downwardly to elevate the platform and its load, a stop carried by said toggle mechanism for preventing the parts of that mechanism from going past their dead center looking position, and a foot operated device for breaking the joint of said toggle mechanism and allowing the platform to be lowered.

l. A hand lift truck comprising, in combination, a platform presenting a horizontal load receiving surface, load stops rigid with the platform and extending upwardly therefrom at the rearward end of the latter, a platform lifting lever extending from a position underneath the forward end of the platform rearwardly underneath the load stops and then upwardly to a position at the rear and above the platform, means for pivotally connecting the forward end of the lever and the platform, rolling supports journaled near the forward end of the lever, a. member pivotally connected to the stops near their upper ends, a link pivotally connecting the lever and said member, means for preventing the link and the member from morement past platform locking position when the lever is moved downwardly to elevate the platform, and foot operated means for moving the link and said member out of locking position to allow the platform to be lowered. V r

5. A hand lift truck comprising, in combi-" nation, a horizontally positioned load supporting plat-form, a load lifting and trans porting lever extending from a position above and rearwardly of said platform to a position underneath the platform near its forward end, means for pivotally connecting locking position when the lever is moved downwardly to elevate the platform andfit-s load, and foot operatedmeans rigid with a part ofthe toggle mechanism for releasing the lock when it is desiredto lower the'platform and move the truck from underneath its load,

6. A hand lift truck comprising, in combiload receiving surface, a platform lifting and load transportin g lever extending underneath the platform from a position near the forward end of the platform'a-nd then upwardly toja position above and at the rear of the platform, means for pivotally connect ing the forward end of the lever and the platform at a position underneath the forward end of the platform, supporting wheels carried by the lever rearwardly of said means, toggle load supporting and platform locking mechanism constantly connecting the rearward end of said platform and the lever and extensible toward locking position as the rearward end of the lever is moved downwardly to elevate the platform and its load, a stop carried by said toggle mechanism for preventing the parts of that mechanism from going past their dead center locking position, and a footoperated device for breaking the joint of said toggle mechanism and allowing the platform to be lowered, said device being an extension of a part of the toggle mechanism. a

7. A hand lift truck comprising, in combination, a platform presenting a horizontal load receiving surface, a load stop rigid with the platform and extending upwardly there? from at the rearward end of. the latter, a

bent platform lifting lever extending from a position underneath the forward end of the platform rearwardly to a position underneath the load stop and then upwardly to a position at the rear and above the platform, means for pivotally connecting the forward end of the lever and the platform, a rolling support journaled near the forward end of the lever, a toggle member pivotally connected to the stop near its upper end, a toggle link pivotally connecting the lever and said member, a stop on the link for, preventing the link and the member from movement past platform locking position when the lever is moved downwardly to elevate the platform, and foot operated means for moving the link and said member out of locking position to allow the platform to be lowered. In testimony whereof I aflix my signature.

' HARRY A. HUNTOON nation, a platform presenting a horizontal 

